Lamp socket



FIG. 1 is a rear perspective view of a lamp socket embodying our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a left side view thereof; and,

FIG. 7 is a front view thereof. 

The ornamental design for a lamp socket, as shown. 